DODGE RAM 5.7 HEMI MISFIRE INSUFFICIENT IONIZATION DIAGNOSIS & FIX
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- เผยแพร่เมื่อ 20 ก.ย. 2022
- In today's video we take a look at a 2014 Dodge Ram 1500 with a 5.7l Hemi V8 engine. The customer's complaint is that the engine has a constant dead misfire on cylinder number 7. After using a scan tool to read codes we find that we have a P2320 Ignition Coil 7 Secondary Circuit-Insufficient Ionization code stored in the PCM. The owner has already replaced the spark plugs with high quality iridium but still has a misfire. After swapping coils and not seeing the misfire move, I knew we had a more serious problem. Follow along as I take you step by step through troubleshooting and repairing this truck!
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Due to factors beyond the control of Advanced Level Auto, I cannot guarantee against improper use or unauthorized modifications of this information. Advanced Level Auto assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Advanced Level Auto recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Advanced Level Auto, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Advanced Level Auto. - ยานยนต์และพาหนะ
Man that one was a tough one. Had to pull out all the stops! So much respect for your time and display of correct diagnostics!
An amazing amount of testing to find the problem. Very good job!
I’m just 17 minutes in but I love it and all your videos. Your channel is the best edited , best at engaging viewers, most informative in short bursts in the mechanic TH-camr realm. There’s more I could say but to keep it short , you’re amazing at what you do.
I try to cram as much info as I can into each video without wasting peoples time. Thank you for watching and supporting the channel!
Yes he is the best on TH-cam from information about everything
Great stuff, you always get the hard ones. You went through all the possibilities which left only the pcm.👍
Step by step troubleshooting. No guessing game. Excellent. Thank you for sharing your knowledge.
Diagnosing can be exhausting! But you came through with the proper analysis.
Very good fix!
Excellent diagnosis and conclusion Eric... WELL DONE!!! 10/10
Hats off to you sir! Thank you for your time and effort in sharing your experience.
You are a master mechanic bro. You always put out very detailed information.
Excellent video. Your logical process through debugging the issue was impressive.
Owner of a 2013 Ram 1500 with the 5.7 and I found this video very useful, informational, very educational and mostly entertaining you'd make a great instructor! Gets my like and subscribe, very well done Eric and appreciated!
I knew about Ionization in an article I read about the spark plugs but now I am getting to see someone actually troubleshooting one of these issues. Great video. Thumbs up
This was my first time running across this code. It seems to be a Chrylser thing. Thanks for watching!
First time watching your videos. Really appreciate your time and effort into them. It helps us non mechanic guys understand a lot. Keep it up. Thanks again for your hard work.
I’m so glad to see you’ll be at 100k within a day. You deserve to have a million though. You diagnose and correct some of the most complicated and craziest electrical issues. No matter how relevant your videos are to me I watch them all. Great job.
Thank you for all the support!
Muy bueno el vídeo,lo mire desde principio asta final muy buena información
I have a 2010 Ram 1500 check engine light (mirror passenger right circuit short to battery B1645) any ideas what can be wrong?…thanks
AWESOME! Man I always open your channel to check for new videos, please keep them coming. In my opinion, your channel is the best at explanation when it comes to Auto repairs.
Great content as always. Awesome thought process covering all your fundamentals before condemning pcm.
Awesome job!... Like how you ruled out everything else before figuring out that the PCM was bad! It makes a lot of sense, because PCM does on/off coil switching!
As a used car technician all data is very useful. They even have bulletins when it comes to problems are very reoccurring, and they literally explain what to do, what to replace, what to reprogram and what not!
Whenever I get DTCs that have a circuit codes it’s never been anything internal mechanically with the engine. It’s always been a wiring or module issue. Glad you got it fixed 👍👍👍
Thanks for the detailed explanation of your thought process and diagnostic procedures. I always learn something from your videos.
Man I always enjoy watching the way you troubleshoot cars. Great information
Your troubleshooting skills are top notch your videos are informative and very helpful 👍 I don't own a automotive scanner I definitely want one
Nice bro, I just discovered your channel . I thought it was Awsome how you explained how you went through process of elimination And discovered it was the pcm. Man that would have drove me crazy Great work .I'm glad I found your channel. nice to see an intelligent and informative mechanic.🤛🤛
Amazing video.
I've worked a parts store for over 30 years and I tell customers all the time to have a proper diag. Done before firing the parts canon
Wow. Nice one. That was EXPENSIVE diagnosis.
Thank you so much! I had another one of these come in today with the ionization code except on cylinder 4. Following along your video helped me determine it was also the PCM on my customer's truck! Knew the coil swapping trick but hadn't used the oscilloscope feature before to go further.
Ive replaced two PCMS for this in Dodge Rams. Its always a hard call with no 100% proof but when you eliminated everything else, an educated guess is what you have to make. Nice Work man!
Exactly! Thanks for watching!
Spot on, If only customers would appreciate
Spot on, If only customers would appreciate
Awesome job well done 👍👍👍
Lol my dads 15 journey kept draining batteries. New alternator battery. It was pcm
Great diagnostic, The biggest problem having the pcm close to where all of the heat from the engine. I know its easier to get at but having to replace for it again and again. Its better having the pcm in the under dashboard, far away from the heat.
Knocked it out of the park with this one!! Great stuff brother
Very helpfull you explaining 🙄 every thing very clear ...GOOD JOB MAN
Awesome find on this. Way to verify and prove your work! Thanks for sharing 👍 tons of info!
Same problem here. Did all those test. Im at the valve cover step. Thanks for solidifying my taughts on this
Great video! When you 1st said the owner replaced the spark plugs with Iridiums, I thought for sure that would be something to do with the problem. It is pretty-well known in the 5.7L Hemi community that this engine likes basic copper plugs better, Champions or NGKs. So glad to see that you swapped plugs later on in the video to rule that out.
Thats a negative, they prefer irridium. Wont run well on very many plugs at all.
Wait ago~! Not knowing anything about scan tools & such, you sure did create food for thought. Almost makes me want to get one now~! Diagnostics is so much easier with it.
*WELL DONE* & Thanks for putting this together.
Excellent video! Very informative and thorough. Thanks for sharing.
Eric, AWESOME thought process and fix and when i do relative compression test i just put my scope led in revers yellow wier on neg and black on positive with out inverting the wave form only AC coupling will do the trick always learning from the best cheeeeers and thanks for sharing.
Nicely done. Great demonstration of how it's not the tools but the knowledge and know how. You used that ancient scope flawlessly
I wouldn’t call it ancient 😂
@@ADVANCEDLEVELAUTO well I'm ancient🙂
Great job as always.. Looks like ur doing better. That shop closing video is a tear jerker. Peace , all the best
Wow Great job with that issue. you are thorough!. Makes you a great mechanic.
Love your diagnostic process
You did a great diagnostic, I always learn something every time I watch your’s videos thanks for sharing your acknowledge
Man I just have to say I love your videos. I’m a technician myself and wish I worked with techs like you. Too many modern techs don’t give a damn about their work or their diagnostics.
Love your channel. You explain everything so easily without any nonsense. 👍👍
Great job of following good testing procedures.
Great 👍🏼 Advanced Level INSTRUCTION !! Much appreciated . 👊🏼
Great job! I have a 5.7L and I was thinking that it would be the roller on the lifter had frozen up and was affecting the compression. Glad it was not. Really like you way you explain what you are doing step by step.
Thank you for this video. I am in the middle of diagnosing the same issue with cylinder 5️⃣.
Very thorough diagnosis!
Great video. Thanks for taking the time to make and post.
Fantastic diagnostics and repair.
Thank you and really appreciated your time. My 2014 Dodge Ram 5.7 I think has the same problem.
Wow great diag! Thanks for setting up the scope at the end. I know that takes time from wrapping it up and getting out of there.
Great diagnosis, I would never think that a PCM could be the direct cause of a misfire in a million years.
Honestly it still confuses me because the PCM is still able to control and fire the ignition coil but it detects a misfire due to it's own fault.
I have come across this code many times. It always turns out to be a pcm for me.
Seems like Chrysler PCMs have a thing of their own
@@ADVANCEDLEVELAUTO Yeah its like it's throwing punches right back at itself.
Wow, lots of hard work, great job eliminating sooo many other things....thanks again....
Awesome. I love watching your videos. I always learn something new.
In my job I have plenty of time to watch videos out of boredom. I’ve watched thousands and thousands of videos and found this. YOU sir are way under rated. I knew a few minutes in, that you weren’t some clown pretending to know a little about trucks like 99% of TH-camrs. I’d honestly feel comfortable using your video as a tutorial should I ever cross this issue on one of my Rams. I’m going to have to check out all ur videos cuz even though I don’t have anything wrong with my truck, it was very educational. EXCELLENT VIDEO !! 5⭐️s
Thank you for making this video, I was at my whits end trying to diag an 03 5.7 and this just gave me a direction to follow
This proves you do not have to be an engineer to be a genius. BTW-I'm an engineer...great diagnostic work, Eric!
Great i think my 2013 ram 5.7 is doing the same thing but #2 misfire. did the same swapping of coil and spark plug. Thanks for the video very helpful on a path to follow on problem shooting.
Thank you! It is helpful information and nice tricks!
I have RAM 1500 5.7 2015 and sometimes it's misfiring, but I ignored it. I had plans to replace all ignition coils, but after this video I will investigate it in more details.
Well done, you really checked everything.
I am impressed with your knowledge every time I watch one of your videos good job young man
Thanks for watching!
This is a very informative video. I have a 2014 Ram 1500 5.7 hemi. I have been chasing these gremlins for about 6 weeks. Started with a broken spring and dropped valve in #7. Replacing all springs, broken valve, and pushrods didnt correct issue. Did a MDS delete because i was going to remove heads again. Put new cam and solid lifters in. Still had random misfire (P0300). Purchased an refurb PCM and i still have P0300. Gonna go through it again following your video, hopefully my luck changes. Thanks again.
Well done!! Very thorough and very helpful.
Persistence and knowledge always wins!
bro this guy is such a great mechanic 👨🔧 i love it man keep it up
Even though it looked grim, you got it buddy!!!
Wow! Awesome content and you're a gifted teacher all the information was easy to digest.. you have subscription!
Wow. I can't see how the pcm would do that. Another good diagnosis!
Top notch. Enjoyed watching and.....learning.
Love your video and how throughout you diagnostic skills. I’ve watched many of your videos and love it. I bought my car to a mechanic to fix my brake problem, they replace master cylinder and booster without making diagnostic properly. The brake doesn’t work so they called and apologized but still I’m getting charged for the parts, they felt bad to charge me for the labor. If I take my car to you to get it done by you correctly, I would’ve save money from replacing good parts! That sets him apart from average Joe mechanics
Eric I am not a mechanic but I thoroughly enjoy learning from you and your incessant drive to find the real problem no matter what it takes. Great job again. Thanks for the education
Your good keep it up I have the same problem on a 2012... my mechanic did everything but the pmc...but was leaning towards it...good job.
Hi there, Eric this was again an awesome video to watch,
I learn a lot from your video,s also from your friend oz.
My level gets better and better, I like the the way you explain things step by step-by-step that makes it easier to understand also for others I believe, especially
my English is not on a top-level . Keep on doing the good work 👏
Just came across your video and it was very good thank you for sharing your information and knowledge
outstanding video. Thanks for the education!!!
Great job as always!
Another great video, thanks for uploading!
Amazing top shelf work.
Awesome video dude took a ton of work to figure that crap out
Very methodical and easy to follow
Take it from a highly experienced electronic engineer, you're good, very good.
Brilliant analysis. Definitely, high level of skill required for proper interpretation. Love it!
That was a tough one. Thank you for sharing
I really enjoyed your video. Wonderful information.
Great work Eric
Man that was an outstanding video. Thank you so much for taking the time I have a 2013 dodge 1505.7 hemi engine with a PO 305 still in the number five and he cannot make heads or tails out of what’s going on he meeting my mechanic where are you guys out of, my truck still in the shop I’m gonna have to mention to him the PCM thank you so much man I really appreciate your video
You and "Eric O" (SMA) rock!
Thanks! I'm going to go straight to replacing the PCM.
Monster diagnostics!! 👍
A great in depth video. 👍
It really blew my mind when I first saw the ignition waveform for cyl #7, I couldn’t make any sense of it either, initially. I know you and so many others are wondering how it is that the PCM can properly ground and release the coil, yet there is no spark, with an odd looking waveform. So after thinking it over a bit, here is what I believe is basically happening.
A transistor is composed of different layers, some of which are insulation between conducting layers. I believe what is happening is essentially the effect of an insulation breakdown inside the transistor for that coil’s driver circuit. So the transistor can operate properly and switch on and off as long as the voltage is not too high. But the voltage spike from the coil being released is high enough to leak past the insulation and start conducting to ground again. That would explain the odd waveform, which interestingly, looks similar to a current ramp.
Also I noticed that the peak inductive kick voltage is only around 40 V on cyl #7, but off the scale on #5. That would also seem to indicate that the transistor starts re-conducting again around 40 V, and dissipates the energy that would otherwise have created a spark on the secondary side. I am by no means an electronic expert, but I know the basics, and I believe that explains what is going on. Someone with a more in depth understanding of electronics and transistors please correct me if I am wrong.
Daaaamn love your videos keep up the GREAT WORK!!!!!
Thank you!
Very good very detailed I am new to this so I have a lot to learn thank you:)
Muy buen video como siempre tocayo. saludos desde el valle.
One of the coolest cats on the TH-camS.. Great video bro. You are the man!
Your r the man Eric, If only we knew how would the pcm fail when it can switch the coil and still monitor the spark line.
Maybe the driver was getting tired and not switching fast enough
Excellent trouble shouting steps
Greetings, you have very good diagnostic videos. I also like to solve cases regarding diagnostics in the fca line. The PCM has a misfire counter. When the PCM detects many cylinder misfires, it disables the pulse, although it is not necessary to rule out driver damage. of spark, I have solved some cases by changing the misfire counter with hp tuner without replacing pcm.
Thank you for the time to diagnose a dodge. Im 99% sure now that this is the same thing wrong with my friends.